Hi, I always get 0.04 in the serial port, and there is no change, even I block the transmit tube.

Hi, I always get 0.04 in the serial port, and there is no change, even I block the transmit tube.
2025-07-25 11:01:15
Tonny12138
Please check the probe connection cable, if you plug it with a wrong side, it won't work.
